I've been modelling for years ans just have to ask 'what are materiel zones'? I make a model and apply textures and no one ever said said anything about materiel zones, which I assume are the bits that that accept materiels. I'm not sure i'd have got into this if If I'd been told I had to understand materiel zones.  Please, can we have a more precise terminology or a  dictionary of terms such as 'Material zones', 'transmap' and etc.